BERG DRYBERG RF, Operating And Maintenance Manual

Page: 36 / 42

E Presence of condensate
downline from dryer (units
with timed discharge
system). E1 Condensate discharge
solenoid valve coil burnt
out. E1.1 The condensate and/or
compressed air are not
discharged when the
manual control button is
pressed. Replace the condensate
discharge solenoid valve coil.
E2 Blocked strainer upline
from the solenoid valve. E2.1 Very little condensate is
discharged when the
valve opens. Remove and clean the strainer
(see 11.2 “Condensate discharge
system”).
E3 Solenoid valve opening time
too short. E3.1 The condensate continues
to flow when the manual
check button is pressed
after a programmed
discharge. Increase the solenoid valve
opening time (see 11.2
“Condensate discharge
system”).
E4 (if envisaged by the
electronic controller fitted
on the unit, refer to Chapter
7 “Electronic controller
RF
”)
An excessively long closing
time has been set for the
solenoid valve.
Reduce the solenoid valve
closing time (if envisaged by
the controller fitted on the unit,
see Chapter 7 “Electronic
controller
RF
”).
E5 Solenoid valve orifice
blocked. E5.1 The condensate and/or
compressed air are not
discharged when the
manual check button is
pressed. Isolate the dryer from the
compressed air net, dismantle
the solenoid valve, clean the
components and re-assemble
the solenoid valve (see 11.2
“Condensate discharge
system”).
E6 The electronic board relay
controlling the solenoid
valve doesn’t work. Use a tester to check that the
relay contacts controlling the
solenoid valve do not close
when the manual discharge
button is pressed. If the relay
doesn’t work, replace the
electronic board.
F Presence of condensate
downline from the dryer
(units with smart discharge
system). F1 Condensate discharge
system fault. F1.1 The condensate and/or
compressed air are not
discharged when the
manual control button is
pressed. Repair or replace the condensate
discharge system.
G Tripping of high pressure
switch (HP) - if supplied
with the unit. G1 The fan doesn’t work. G1.1
• Refrigerant compressor
stops;
• main alarm relay tripped
(if present on the controller
fitted on the unit, see
Chapter 7 “Electronic
controller
RF
”).
Repair or replace the fan.
Where fitted, check the circuit
breaker of the fan.
Restart the unit
(see heading 9.2 “Alarms
table”).
G2 Air-cooled dryers: ambient
air temperature too high. G2.1
• Ambient air temperature
higher than maximum
permitted value;
• the condenser is invaded by
warm air expelled by the air
compressor;
• see also G1.1 .
If the unit is installed indoors,
reduce ambient temperature to
within rated limits,
e.g. installing fans to extract the
air.
Restart the unit
(see heading 9.2 “Alarms
table”).
PROBLEM CAUSE SYMPTOM REMEDY